Review Request JDK-8210721: Replace legacy serial exception field with Throwable::cause

[Lance Andersen]

Looks good Mandy...
> On Sep 13, 2018, at 2:44 PM, mandy chung <mandy.chung at oracle.com> wrote:
> 
> A few exception classes such as ExceptionInInitializerError, InvocationTargetException,
> etc were defined prior to the exception chaining facility and provides the API to get
> the cause of the exception. These classes keep its legacy serial field e.g.
> ExceptionInInitializerError::exception to get the serialization to work on older JDK version.
> 
> During the review of JDK-8209553 [1], Peter and Joe suggest to remove this legacy
> serial field and implement the serialization using serialPersistentFields, readObject
> and writeObject.   It turns out that these redundant fields were removed when the
> exception chaining support was initially implemented but it got reverted to fix
> JDK-4385429 since Throwable::setCause rejects any further change as
> Throwable::cause has been initialized to null.
> 
> This patch removes these legacy serial field and stores the cause in Throwable::cause.
> It's essentially a redo for the fix for JDK-4385429.
> 
> webrev:
> http://cr.openjdk.java.net/~mchung/jdk12/webrevs/8210721/webrev.00/
> 
> Mandy
> [1] http://mail.openjdk.java.net/pipermail/core-libs-dev/2018-August/054878.html 

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 <http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
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